package cn.wolfcode.car.business.service.impl;

import cn.wolfcode.car.business.domain.Statement;
import cn.wolfcode.car.business.domain.StatementItem;
import cn.wolfcode.car.business.mapper.StatementItemMapper;
import cn.wolfcode.car.business.mapper.StatementMapper;
import cn.wolfcode.car.business.query.StatementItemQuery;
import cn.wolfcode.car.business.service.IStatementItemService;
import cn.wolfcode.car.common.base.page.TablePageInfo;
import cn.wolfcode.car.common.exception.BusinessException;
import cn.wolfcode.car.common.util.Convert;
import com.github.pagehelper.PageHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;


@Service
@Transactional
public class StatementItemServiceImpl implements IStatementItemService {

    @Autowired
    private StatementItemMapper statementItemMapper;

    @Autowired
    private StatementMapper statementMapper;

    @Override
    public TablePageInfo<StatementItem> query(StatementItemQuery qo) {
        PageHelper.startPage(qo.getPageNum(), qo.getPageSize());
        return new TablePageInfo<StatementItem>(statementItemMapper.selectForList(qo));
    }


    @Override
    public void save(StatementItem statementItem) {
        statementItemMapper.insert(statementItem);
    }

    @Override
    public StatementItem get(Long id) {
        return statementItemMapper.selectByPrimaryKey(id);
    }


    @Override
    public void update(StatementItem statementItem) {
        statementItemMapper.updateByPrimaryKey(statementItem);
    }

    @Override
    public void deleteBatch(String ids) {
        Long[] dictIds = Convert.toLongArray(ids);
        for (Long dictId : dictIds) {
            statementItemMapper.deleteByPrimaryKey(dictId);
        }
    }

    @Override
    public List<StatementItem> list() {
        return statementItemMapper.selectAll();
    }

    @Override
    public void saveItem(ArrayList<StatementItem> items) {
        if (items !=null && items.size()>0) {
            StatementItem last = items.remove(items.size() - 1);
            statementItemMapper.deleteByStatementId(last.getStatementId());

            BigDecimal totalAmount = new BigDecimal("0.0");
            BigDecimal totalQuantity = new BigDecimal("0");

            for (StatementItem statementItem : items) {
                statementItemMapper.insert(statementItem);
                totalAmount = totalAmount.add(statementItem.getItemPrice()
                        .multiply(new BigDecimal(statementItem.getItemQuantity())));
                totalQuantity = totalQuantity.add(new BigDecimal(statementItem.getItemQuantity()));

            }

            Statement statement = statementMapper.selectByPrimaryKey(last.getStatementId());
            statement.setTotalAmount(totalAmount);
            statement.setTotalQuantity(totalQuantity);
            statement.setDiscountAmount(last.getItemPrice());
            statementMapper.updateStatementById(statement);
        }else {
            throw new BusinessException("参数异常");
        }






    }

    @Override
    public Statement getByStatement(Long statementId) {
        return statementItemMapper.selectByStatement(statementId);
    }
}
